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`timescale 1us/1us
`include "nandgame_types.v"
module arith_unit_tb;
logic [15:0] in1;
logic [15:0] in2;
ArithCode opcode;
logic [15:0] result;
arith_unit uut (
.X(in1),
.Y(in2),
.operation(opcode),
.RES(result)
);
string filename;
initial begin
`ifdef DUMP_FILE_NAME
filename=`DUMP_FILE_NAME;
`else
filename=" arith_unit.lxt2";
`endif
$dumpfile(filename); $dumpvars();
end
initial begin
in1 = 13;
in2 = 17;
opcode = ARITH_PLUS;
#1
assert(result == 30);
#1
in1 = 12;
in2 = 4;
opcode = ARITH_MINUS;
#1
assert(result == 8);
#1
in1 = 12;
in2 = 13;
opcode = ARITH_MINUS;
#1
assert(result == 16'hffff);
#1
in1 = 13;
in2 = 17;
opcode = ARITH_INC;
#1
assert(result == 14);
#1
in1 = 13;
in2 = 17;
opcode = ARITH_DEC;
#1
assert(result == 12);
#1
in1 = 0;
in2 = 17;
opcode = ARITH_DEC;
#1
assert(result == 16'hffff);
#1
$finish();
end
endmodule
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